The label above the keyboard gives: "Henry Holland NEPHEW and SUCCESSOR to Mr Pyke/Organbuilder to His Majesty/Bedford Row and St James's Street PICCADILLY". A graffito under the organ shows that it was not Holland who made it: "Ed. White Invent et Delinea/May ye 30th 1788".

It was made for Osterley Park, restored in 1955 by Noel Mander, spent some time at The Vine in Hampshire, and has now been returned to Osterley, on loan to the National Trust from the owner, Augustine Ford. The organ was restored by Edward Bennett during the winter of 2000-2001.

The organ has St Diapason, Principal and Fifteenth, with bass and treble knobs for each stop on either side of the keyboard. The shifting movement removes the Fifteenth. All the pipes are made of pine.

The compass is GG AA - f³, with the bass/treble division at bº/c¹. An internal blower and a trolley have been provided so that the organ can be moved for concerts and weddings.